Summary
Gardiner Middle School is a grades 6–8 school in Oregon City, Oregon, serving 699 students and part of Oregon City School District 62. In 2025–2026, it ranked 172nd of 371 Oregon middle schools — the 54th percentile, 3 stars — placing it below its own district. After a pandemic-era slide, the school has improved for four straight years, gaining 17 percentile points, though it remains below its mid-2010s peak. Current proficiency is 41.8% in English language arts, 31.9% in math, and 25.7% in science; that is near the state average in ELA and math but 4.9 points behind in science.
Two things stand out for parents. First, attendance is a real strength: chronic absenteeism is 26.5%, better than the district (29.6%) and state (33.5%) and the fourth-lowest among ten nearby schools. Second, class sizes are a concern. The student–teacher ratio is 28.3:1, the highest in that comparison group and a sharp jump from 22.5:1 just two years earlier. Per-student spending is $18,464 — mid-pack. Notably, Gardiner outperforms several higher-spending, smaller-class neighbors, including Walter L Kraxberger Middle School, Rowe Middle School, and Alder Creek Middle School, in some subjects, suggesting money and class size alone do not determine results here.
Compared with its same-district peer Tumwata Middle School, Gardiner has similar enrollment and student economics but leads in math while trailing in ELA and science — even though Gardiner’s attendance is better. The highest-scoring nearby schools, such as Rosemont Ridge Middle School and Meridian Creek Middle School in West Linn-Wilsonville School District 3J, serve lower-poverty populations. Inside Gardiner, results vary widely: low-income students and students in special education score lower, with a 37-percentile-point spread between the highest- and lowest-performing groups, while gifted and talented students improved to the 55th percentile. Science and 7th-grade ELA are the weakest spots. Overall, this is an improving, mid-pack school with strong attendance but notable class-size and achievement-gap challenges.
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